6543449753471 has 2 divisors, whose sum is σ = 6543449753472. Its totient is φ = 6543449753470.

The previous prime is 6543449753431. The next prime is 6543449753587. The reversal of 6543449753471 is 1743579443456.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6543449753471 is a prime.

It is a super-3 number, since 3×6543449753471³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543449753431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271724876735 + 3271724876736.

It is an arithmetic number, because the mean of its divisors is an integer number (3271724876736).

Almost surely, 2^{6543449753471} is an apocalyptic number.

6543449753471 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543449753471 is an equidigital number, since it uses as much as digits as its factorization.

6543449753471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 152409600, while the sum is 62.

The spelling of 6543449753471 in words is "six trillion, five hundred forty-three billion, four hundred forty-nine million, seven hundred fifty-three thousand, four hundred seventy-one".